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NAS1351C4-6
3/8 Inch Length NAS1351 Undrilled Socket Head Screw
Description
Fastener Length: 23/64", Thread: 1/4-28, Head Width: 3/16", Thread Length: 9/32
Specifications
| Country of Origin | USA |
|---|---|
| Drilling | Undrilled Head |
| Fastener Length | 0.345 inches minimum and 0.375 inches maximum |
| Hardness Rating | 80.0 rockwell b minimum |
| Head Diameter | 0.365 inches minimum and 0.375 inches maximum |
| Head Height | 0.244 inches minimum and 0.250 inches maximum |
| Head Style | Flat chamfer |
| Head Type | Socket |
| Industry Standards/Certification | NAS1351 |
| Internal Drive Style | Hexagon |
| Length | 3/8 in |
| Material | CRES |
| Material Specification | 66 fed std 1st material response or 66 fed std 2nd material response or 66 fed std 3rd material response or 66 fed std 4th material response or 66 fed std 5th material response or astm a493 assn std 6th material response |
| Sold In | Per Package |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty 1,cl 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.274 inches minimum and 0.375 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNRF |
| Thread Size | 0.2500-28, 1/4 |
| Weight | .005 lb |
| Width Across Flats | 0.1875 inches minimum and 0.190 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- MS16998-40 MS 28.00-28 · 3/8 in · Flat chamfer · Steel
- NAS1351-4-6P NAS 28.00-28 · 3/8 in · Flat chamfer · Steel
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Catalog data updated 2026-07-05. Report a data error